P23E7

EGR C Flow Insufficient Detected

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Loss of engine power
Unstable idling
Increased fuel consumption
Detonation (knock) during acceleration
Check Engine Light Illuminates

Causes

EGR valve clogged
EGR solenoid valve malfunction
Depressurization of vacuum lines
Problems with EGR valve wiring harness
EGR valve position sensor malfunction

How to Fix

Check the condition of the EGR valve and clean if necessary.
Check the operation of the EGR solenoid valve
Inspect vacuum lines for leaks
Check the integrity of the wiring harness and contacts
If necessary, replace the EGR valve

Related codes

P0401 P0402 P0403